The biggest hit in Game 7 of the National League Championship Series was actually hit three times, all in the same swing.

Hunter Pence's broken-bat, bases-clearing double in the third inning included three separate instances of ball hitting wood. The final contact put the ball on an odd trajectory and fooled St. Louis shortstop Pete Kozma, who broke to his right as the ball veered to his left.

Pence was credited with a two-run double; a third run scored on an outfield error. The hit and error gave the San Francisco Giants a 5-0 lead.

Baseball rules do not prohibit a double- (or in this case, triple-) hit on such a swing, so Pence's liner was legal. The closest MLB comes to addressing the issue appears to be Rule 6.05(h):

"After hitting or bunting a fair ball, his bat hits the ball a second time in fair territory. The ball is dead and no runners may advance. If the batter-runner drops his bat and the ball rolls against the bat in fair territory and, in the umpire’s judgment, there was no intention to interfere with the course of the ball, the ball is alive and in play;

Rule 6.05(h) Comment: If a bat breaks and part of it is in fair territory and is hit by a batted ball or part of it hits a runner or fielder, play shall continue and no interference be called. If batted ball hits part of broken bat in foul territory, it is a foul ball."